Water-supplying attachemt for rock-drilling machines.



No. 847,286. PATENTED MAR. 12, 190

- 1 H. HBLLMAN & L. c. BAYLES.

WATER SUPPLYING ATTACHMENT FOR ROCK DRILLING MACHINES.

' APPLICATION FILED JULY 24, 1906.

' and LEWIS {Jonnror Barnes, oi

not impeded by the cuttings.

' means for the accomplishment of the purposes HENRY HELLIviAN AND LlJJS "l-FS [t llltht @FFKQEL Ctililllill. LBr-T'LYLEF, OF JOi-IANN "SBURG,

TRAN EVA Al J Specification of Letters Patent.

Patented March 12, 1907.

Jriginal application filed July 12,1505,i-eria,l lie. ZOQ/ll/(l. Divided and this application filed July 24,1906. Serial No. 327.471

T0 11/5], whom it may concern:

Be it known that we, HENRY lTlELLMAK tuaens ol. the United States, and residents of: Johannesburg, Transvaal, have invented certain new i and useful Improvements in l'Vater-Supplying Attachments for Rock-lhilling ltlechines, of which the following is a wecification.

This invention relates to rock-drilling niachines or engines and to attachments for supplying Water through the drill-stecl to the cutting extremity thcreoi with the object of preventing the impregnstionof the atmosphere en ti dust or minute particles ol rock'produced when the machine is in operation. The dissemination of this dust, as is Well known, deleteriously aliects the health of r0ck-drill operatms. Another 1'. 'iportant feature of the introduction or supplying of Water to the cutting-point oi tl 1e drill is that it increases the ellioiency oi the machine by washing away the detritus, so that the hit contacts directly with the solid rock and is it also prcserves the cutting end of the drill and so oh viatcs the necessity for as .l'rocuoi t renewal of the drills or bits as When Wat is not used. The ObJQOt oi the invention is to provide specified which shall be simple and ellicicni. in operation and to obviate the defects of the devices at present in use.

The attachment which is positioned on the shank or rear end oi the drilhstoel is readily detachable therefrom in the operation of renewing the drills, and such arrangement has the further advent ge that it obviates the necessity for the passing of the water through any part of the machine or engine proper, so that drills of bits may he used in the same machine without the water -supplying al.-

downwardly-inclined holes when such whiten supply may not be requisite or oesu'od.

"The mventlon constituting the subject- .matter of the present application is division of an application filed by us on the 12th of July, 1905, hearing oilicial Serial No.

? chine or engine, partly in section, with the invention applied thereto; and Fig 2 is a de t-ached view of the water-swivel shown open.

In the drawing, 1 designates a hollow cylindrical protecting-casing, and 2 the powercylinder, which is slidahly and rotatably mounted in said casing.

Round the protecting-casing 1 is clamped the eve or hand 3, which is shown constructed with the cone 4 for mounting the apparatus on an ordinary column or in an other suitable support. The sleeve 3 is split and formed with the lugs 5, between which is placed a bolt 6, which serves for drawing the two lugs 5 together to tighten the sleeve 3 round the casing l. I

The casing 1 is constructed with an inletport 7 at or in proximity to the rear end, which serves for connecting an ordinary throttle-valve through which the compressed air or other actuating fluid is admitted to the rear end of the casing l. The casing l'is also constructed at its forward end with holes 8, which serve as exhztustqlorts for the fluid exhsustir into the cash 1g 1 from the powercylinder 2, Holes 9 are also formed at or about the center of the casing l, which form escape-ports for the actuating fluid under certain circumstances. The casing l. is slmwn constructed of slightly smaller dian'ieter at the forward said to make a sliding it with the exterior of the 0WGFCylilidGI. 2

Instead of the construction shown it will he cvi llcnt that a bush, cap, or end piece may ho iittcd on or in the end oi the casing to form a hearing: for the forward cud of the powercylinder .1.

3?; is a port which serves alternately as a supply and exhaust port for the forward end of the power-cylindcr L3, and 39 an exhaustport in the pmver-cylhider 2, communicating with the interior of the casing l.

5U an extension of tlic power-cylinder 2, to which the latter is rotatably connected, and 54 a cap or nut on the rear end of the casing .l. i

(59 is the handle for retracting the extension $0, and with it thepovver-cylindor 2 in 1 its protecting-casing l, and 7e 73 are screw The Da'WVEf-CYllIldGl 2 is counterbored or made of somewhat larger diameter it the for I ward end, wherein is located the impactpiece 10, which receives and transmits the impacts of the power-piston or percussive reciprocating member .11 to the shank of the drill or hit. The countcrhore 12 forms, with the bore 13, in which the power-piston 11 reciprocates, an abutment or shoulder which limits the rearward move rent of the impact.- piece 10. The connterhore 12 at the forward end is made taper, and into it is fitted a taper-hush 14, which is made with a square or polygonal parallel bore 15. The drill-steel 16 is at its forward extremity constructed or fashioned into any ordinary and suitable form of drill or hit, as a chisel-bit or starbit, and at its rear end or shank is made'of square or polygonal section to correspond to the bore 15 of the hush 14, in which it is loosely positioned. This constructimi insures a synchronous rotation ot the hit 16 with the power-cylinder 2, while allowing the hit 16 to move longitudinally of the powercylinder 2 within certain limits. The inner end 01'' the shank 17 abuts the forward end of the impactpiece 10 in the working of the ma chine, so that the repeated impacts of the percussive reciprocating member 1i are immediately transmitted from the impact-piece it) to the shank of tho drill-steel 16.

In the drill-steel ltl in advance ol the part 17 of square or polygonal section is formed an annular rec ss 20, said recess tor-mine annular shoulders or projections 18 round the drill-steel. The drill-steel 16 is provided with a longitudinal hole or port ltl and with two (more or less) transverse ports 21, communieating at their inner ends with said longitude nal port it) and at their outer ends with the recess 20. v

It will be obvious that instead ol' making: the ports 21 at right angles to he loiuritudinal recess 20 in the water-swivel, whence it.

passes by the water d uct's or transverse ports 21 along the longitudinal hole or port 19 to the cutting; end of the drill and issuing from saidlat'ter port is directed against the rock at the bottom of the hole, and so washes the detritus away from the cutting-Face of the tool.

What we claim as our invention, and desire to protect by Letters Patent, is

1'. In a device such as described, in combination, a drill stce.l having a longitudinal hole therein and an annular recess and a transverse port Coliit'ilitlllCii-tiilg at its outer end with said recess and at its inner end with said longitudinal hole, a swivel-piece mounted in said recess, said swivel piece consisting of two parts hinged together, meansfor detachahly (ZOiii'iGCtilig said parts around the steel, and means for conducting water under pressure to said swivel-piece. v

2. in a device such as described, in combination, a drillsteel havin; 'a' longitudinal hole therein and an annular recess and a transverse port comniunicating at its outer end with said recess and at its inner end with said longitudinal hole, a swivel-piece mounted in said recess, said swivel-piece consisting of two pa s hinged together, said swivel having" an in ernal recess around the drill-steel which iuti' rnal recess communicates with the transverse hole in the steel, the two parts ot port 19 they may he angularly disposed in 1 the sWlVtl-Pltt'P.

relation thereto and in a t'orward direction,

Arranged round the drill-steel 16 and positioncd in the annular recess 20 and hetwecn the shoulders or ahutments 18 is a detachable swivel or swivel-piece l2. 'lhe swivel is con- 'structed oftl'ze two parts 12% 2 i, hinged together i at 25. The two parts areconnected to secure the swivel 32 in the recess ill by in 2111s ol a ferrule '36, which. is carried by the one part 24 and slides up over the end of the other part. This provii'cs a very ready means tor clamping the swivel 32 round the drill-steel 16. 'lhe swivel 3'. is recessed on the inside to form an annular space 29 between it and the reduced portion of the drill-steel. space QSl'the port (or ports) 31 in the recess ill in the strel communicates. 'lhe part 2-1- ol the swivel is constructed with an extension 3(1, which l'oi'ins a stein to which the hose or other llexiblc pipe 331 i lixcil b 1110211150] 1 the hose-clamp or Ulliii suitable device 32.

'lhrough theextcnsion Bill is termed a b01033, leading into the annularspare 2t), 'lhe other With this nation, a drill-steel having a longitudinal said swivel-piece being dctachabl connected in the 1(( ess in the. stee and means tor intro iltlt'lllgllqiiltl under pressure to the cavity in 2%. ln a device such as described, in eonrhination, a drill-steel having a longitudinal port therein and an annular recess and a transverse port ciunmunicating at its outer end with said recess and at. its inncrend corninunicatine' with said longitudinal hole, a

swivel-piece comprising tn o parts hinged to-- nether, said swivel having an internal recess round the drill-steel in communication with the transverse port, means for detachably connecting thes wivel in the recess in thedrillsteel, and means For conihicting liquid under pressure to the recess in the swivel-piece.

t. In a device such as described, in combihole therein and an annular recess and a pluialitv ot' transverse ports communicating at their outer ends with said recess and at their inner ends with said longitudinal hole, a

swivel-piece in two parts hinged together,

said swivel-piece having an annular internal recess round the drillstcel and communicate lass 3 ing with the transverse ports, means for .detachably connecting the swivel-piece in the recess in the drill-s tool, the swivelpiece hav ing a hose-ste1n and a hose-pipe attached to said stein connnunicating with a source of liquid-supply under pressure, as set forth.

5. In a device such as describe 1, in coml ination, a drill-steel having a longitudinal .hole leading to the cutting end thereof and an annular recess forming round thedrilh stecl annular shoulders or pro ections and a plurality of transverse ports communicating at their outer ends with said recess and at their inner ends with said longitudinal hole, a swivel-piece mounted in the recess between the shoulders or ahutments, said swivel-piece having an internal cavity in connnui'iication with the transverse holes in the drillsteel and comprising two parts hinged together, means for detachably connecting the swivel in the recess in the drill-steel, said means coinpris- In" a ferrule or nut, the swivelpicce having a rose-stein, a hose-pipe, a clamp fixing said pipe to the stem, the pipe con'inlnnicating with a source of liquid-supply under pressure, as set forth.

6. in a device such as described, in combination, a poWer-cgdinder having at its forward end an aperture of polygonal transverse section, a drill-steel having a lon itudinal hole leading to the cutting end ano its rear extremity of polygonal transverse sectioncorresponding to the aperture in the front end of the cylinder in which it iits so that-it is compelled to rotate therewith, a swivelpi ece rotatable mounted on the rear end of said drill-steel and in communication with said longitudinal hole, and means, for con-' ducting liquid under pressure to said SWIVQlpiece.

In. a device such as described, in combination, a power-cylinder having at its forward-end an aperture of polygonal transverse section, a drill-steel having longitudinail and transverse holes, and its rear eX- treinity of polygonal transverse section corresponding to the aperture in the front end of the power-cylinder in which it its so that it is compelled to rotate therewith, a swivelpioce on said steel in coi'mnunicalion with the longitudinal and transverse holes in the latter, and means for conducting water under pressure to said. swivel. v

8. In a device such as described, in combination, power-cylinder, a reciprocating percussive member therein, an impact-p1ece located in the forward end of the cylinder and adapted to receive and transmit the inipacts of the percussive member to the drillsteel, the power-cylinder having an aperture of polygonal transverse section in front of cated in the forward end of the power-cylin- 'der and adapted to receive and transmit the impacts of the percussive member to the drill-steel, a bush fitted in the iiorward end of the power-cylinder in front of the impactpiecc said bush being made with a hole of polygonal transverse section, a drill-steel of polygonal transverse section at its rear extremity projected iiito the correspondinglysh'aped bush in the front end of the powereylinder, said drill-steel having a longitudi mil hole and transverse holes and an annular reeesswith which said transverse holes $0111 municate, a swivehpiece located in said an nular. recess having anlin ternal cavity in communication with theTtransverse holes,

and means for conductingwater under pressure to said swivel-piece.

In witness whereof We have hereunto set our hands in the presence of two subscribing witnesses.

HENRY HEL] MAN.

LE, IS OONDACT BAYLES.

Witnesses: v

1 7 1i. Overcome. 

